Synthesis and Electrochemical Performance of Mn₃O₄/Graphene Composites

Authors

Shan-shan YANG, State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Qian ZHANG, State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Xiong-gui LIN, State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Ming-sen ZHENG, State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;
Quan-feng DONG, State Key Lab of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China;Follow

Corresponding Author

Quan-feng DONG(qfdong@xmu.edu.cn)

Abstract

The Mn₃O₄/Graphene composites were synthesized by hydrothermal method with the in-situ redox reaction of graphene oxide (GO) and manganese acetate (Mn(Ac)₂). The phase structures and morphologies of the materials were characterized by XRD, SEM and TEM. The XPS and IR techniques were used for studying the residual function groups of reduced graphene oxide (RGO). The electrochemical performances of the hybrids were tested in a coin cell. Results showed that the composites prepared with the addition of ammonia water (RM-A) have better performance. The graphenes in RM-A were better-reduced and the Mn3O4 particles were much smaller. The Mn3O4/Graphene composites exhibited a high specific capacity with good rate capability and cycle stability. At the test current density of 0.5 A·g^-1, the composites demonstrated a capacity of 850 mAh·g^-1, and no capacity decays were observed up to 200 cycles.

Graphical Abstract

Keywords

lithium-ion battery, anode materials, Mn3O4, graphene

DOI Link

https://doi.org/10.13208/j.electrochem.150414

Publication Date

2015-08-28

Online Available Date

2015-08-28

Revised Date

2015-05-15

Received Date

2015-04-14

Recommended Citation

Shan-shan YANG, Qian ZHANG, Xiong-gui LIN, Ming-sen ZHENG, Quan-feng DONG. Synthesis and Electrochemical Performance of Mn₃O₄/Graphene Composites[J]. Journal of Electrochemistry, 2015 , 21(4): 326-331.
DOI: 10.13208/j.electrochem.150414
Available at: https://jelectrochem.xmu.edu.cn/journal/vol21/iss4/4